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Heiko's avatar
Heiko
Icon for New Contributor rankNew Contributor
4 years ago
Solved

What is QUARTUS_CREATED_GND? Can I get rid of it?

As part of a school project I was implementing a very large combinational logic circuit on a CycloneV (5CGXFC7C7F23C8). And printing the logic blocks that were instantiated using the command `get_nod...
  • Nurina's avatar
    Nurina
    4 years ago

    Hi,

    QUARTUS_CREATED_GND is an auto-generated ground pin/signal/port created by Quartus. You cannot modify this pin.

    The point of this pin is for the tool to create a logic 0. It has to use a LUT with a LUT-mask such that it always generates a logic 0 and then routes this to where it is needed rather than using additional LUTs to create local 0s.

    Regards,
    Nurina

    PS: If you find any comment from the community or Intel Support to be helpful, feel free to give Kudos.

Nurina's avatar
Nurina
Icon for Regular Contributor rankRegular Contributor
4 years ago

Hi,

QUARTUS_CREATED_GND is an auto-generated ground pin/signal/port created by Quartus. You cannot modify this pin.

The point of this pin is for the tool to create a logic 0. It has to use a LUT with a LUT-mask such that it always generates a logic 0 and then routes this to where it is needed rather than using additional LUTs to create local 0s.

Regards,
Nurina

PS: If you find any comment from the community or Intel Support to be helpful, feel free to give Kudos.